Mercedes-Benz 2005 M-Class Operator's Manual page 118

Controls in detail
Lighting
Cargo compartment lamp
1 Switched off
2 Switched on
3 Automatic control
Switched off continuously
Slide the cargo compartment lamp
switch to position 1.
The cargo compartment lamp is
switched off continuously.
116
Switched on continuously
Slide the cargo compartment lamp
switch to position 2.
The cargo compartment lamp is
switched on continuously.
i
When leaving the vehicle, make sure
the cargo compartment lamp switch is
not in position 2 to prevent the vehi-
cle battery from being discharged.
Automatic control
Slide the cargo compartment lamp
switch to position 3.
The cargo compartment lamp switches
on when you open the liftgate.
It switches off when you close the lift-
gate.